PSRule.Rules.AzureDevOps

0.1.1

rules/AzureDevOps.Repos.Rule.ps1

                                # PSRule rule definitions for Azure DevOps Repos

# Synopsis: The default branch should have a branch policy

Rule 'Azure.DevOps.Repos.HasBranchPolicy' `

    -Ref 'ADO-RP-001' `

    -Type 'Azure.DevOps.Repo' `

    -Tag @{ release = 'GA'} `

    -Level Warning {

        # Description: The default branch should have a branch policy

        Reason 'The default branch does not have a branch policy.'

        Recommend 'Protect your main branch with a branch policy.'

        # Links: https://learn.microsoft.com/en-us/azure/devops/organizations/security/security-best-practices?view=azure-devops#secure-azure-repos

        $Assert.HasField($TargetObject, "MainBranchPolicy", $true)

        $Assert.NotNull($TargetObject, "MainBranchPolicy")

}

# Synopsis: The default branch should have its branch policy enabled

Rule 'Azure.DevOps.Repos.BranchPolicyIsEnabled' `

    -Ref 'ADO-RP-001a' `

    -Type 'Azure.DevOps.Repo' `

    -Tag @{ release = 'GA'} `

    -Level Warning {

        # Description: The default branch should have its branch policy enabled

        Reason 'The default branch does not have its branch policy enabled.'

        Recommend 'Protect your main branch with a branch policy.'

        # Links: https://learn.microsoft.com/en-us/azure/devops/organizations/security/security-best-practices?view=azure-devops#secure-azure-repos

        $Assert.HasField(($TargetObject.MainBranchPolicy | Where-Object { $_.type.id -eq 'fa4e907d-c16b-4a4c-9dfa-4906e5d171dd'}), "isEnabled", $true)

        $Assert.HasFieldValue(($TargetObject.MainBranchPolicy | Where-Object { $_.type.id -eq 'fa4e907d-c16b-4a4c-9dfa-4906e5d171dd'}), "isEnabled", $true)

}

# Synopsis: The branch policy should require a minimum number of reviewers

Rule 'Azure.DevOps.Repos.BranchPolicyMinimumReviewers' `

    -Ref 'ADO-RP-002' `

    -Type 'Azure.DevOps.Repo' `

    -Tag @{ release = 'GA'} `

    -Level Warning {

        # Description: The branch policy should require a minimum number of reviewers

        Reason 'The branch policy does not require any reviewers.'

        Recommend 'Require a minimum number of reviewers to approve pull requests.'

        # Links: https://learn.microsoft.com/en-us/azure/devops/organizations/security/security-best-practices?view=azure-devops#repositories-and-branches

        $Assert.HasField(($TargetObject.MainBranchPolicy | Where-Object { $_.type.id -eq 'fa4e907d-c16b-4a4c-9dfa-4906e5d171dd'}), "settings.minimumApproverCount", $true)

        $Assert.GreaterOrEqual(($TargetObject.MainBranchPolicy | Where-Object { $_.type.id -eq 'fa4e907d-c16b-4a4c-9dfa-4906e5d171dd'}), "settings.minimumApproverCount", $Configuration.GetValueOrDefault('branchMinimumApproverCount', 1))

}

# Synopsis: The branch policy should not allow creators to approve their own changes

Rule 'Azure.DevOps.Repos.BranchPolicyAllowSelfApproval' `

    -Ref 'ADO-RP-003' `

    -Type 'Azure.DevOps.Repo' `

    -Tag @{ release = 'GA'} `

    -Level Warning {

        # Description: The branch policy should not allow creators to approve their own changes

        Reason 'The branch policy allows creators to approve their own changes.'

        Recommend 'Require a minimum number of reviewers to approve pull requests.'

        # Links: https://learn.microsoft.com/en-us/azure/devops/organizations/security/security-best-practices?view=azure-devops#policies

        $Assert.HasField(($TargetObject.MainBranchPolicy | Where-Object { $_.type.id -eq 'fa4e907d-c16b-4a4c-9dfa-4906e5d171dd'}), "settings.creatorVoteCounts", $true)

        $Assert.HasFieldValue(($TargetObject.MainBranchPolicy | Where-Object { $_.type.id -eq 'fa4e907d-c16b-4a4c-9dfa-4906e5d171dd'}), "settings.creatorVoteCounts", $false)

}

# Synopsis: The branch policy should reset code reviewer votes when new changes are pushed

Rule 'Azure.DevOps.Repos.BranchPolicyResetVotes' `

    -Ref 'ADO-RP-004' `

    -Type 'Azure.DevOps.Repo' `

    -Tag @{ release = 'GA'} `

    -Level Warning {

        # Description: The branch policy should reset code reviewer votes when new changes are pushed

        Reason 'The branch policy does not reset code reviewer votes when new changes are pushed.'

        Recommend 'Reset code reviewer votes when new changes are pushed.'

        # Links: https://learn.microsoft.com/en-us/azure/devops/organizations/security/security-best-practices?view=azure-devops#policies

        $Assert.HasField(($TargetObject.MainBranchPolicy | Where-Object { $_.type.id -eq 'fa4e907d-c16b-4a4c-9dfa-4906e5d171dd'}), "settings.resetOnSourcePush", $true)

        $Assert.HasFieldValue(($TargetObject.MainBranchPolicy | Where-Object { $_.type.id -eq 'fa4e907d-c16b-4a4c-9dfa-4906e5d171dd'}), "settings.resetOnSourcePush", $true)

}

# Synopsis: The repository should contain a README file

Rule 'Azure.DevOps.Repos.Readme' `

    -Ref 'ADO-RP-005' `

    -Type 'Azure.DevOps.Repo' `

    -Tag @{ release = 'GA'} `

    -Level Warning {

        # Description: The repository should contain a README file

        Reason 'The repository does not contain a README or README.md file.'

        Recommend 'Add a README or README.md file to the repository to explain its purpose.'

        $Assert.HasField($TargetObject, "ReadmeExists", $true)

        $Assert.HasFieldValue($TargetObject, "ReadmeExists", $true)

}

# Synopsis: The repository should contain a LICENSE file

Rule 'Azure.DevOps.Repos.License' `

    -Ref 'ADO-RP-006' `

    -Type 'Azure.DevOps.Repo' `

    -Tag @{ release = 'GA'} `

    -Level Warning {

        # Description: The repository should contain a LICENSE file

        Reason 'The repository does not contain a LICENSE file.'

        Recommend 'Add a LICENSE file to the repository to explain its purpose.'

        $Assert.HasField($TargetObject, "LicenseExists", $true)

        $Assert.HasFieldValue($TargetObject, "LicenseExists", $true)

}

# Synopsis: The branch policy enforce linked work items

Rule 'Azure.DevOps.Repos.BranchPolicyEnforceLinkedWorkItems' `

    -Ref 'ADO-RP-007' `

    -Type 'Azure.DevOps.Repo' `

    -Tag @{ release = 'GA'} `

    -Level Warning {

        # Description 'The branch policy enforce linked work items.'

        Reason 'The branch policy does not enforce linked work items.'

        Recommend 'Enforce linked work items.'

        # Links 'https://docs.microsoft.com/en-us/azure/devops/repos/git/branch-policies?view=azure-devops#enforce-linked-work-items'

        $Assert.NotNull($TargetObject, "MainBranchPolicy")

        $Assert.HasField($TargetObject, "MainBranchPolicy[?@type.id == '40e92b44-2fe1-4dd6-b3d8-74a9c21d0c6e'].type", $true)

}

# Synopsis: The branch policy should enforce comment resolution

Rule 'Azure.DevOps.Repos.BranchPolicyCommentResolution' `

    -Ref 'ADO-RP-008' `

    -Type 'Azure.DevOps.Repo' `

    -Tag @{ release = 'GA'} `

    -Level Warning {

        # Description 'The branch policy should enforce comment resolution'

        Reason 'The branch policy does not enforce comment resolution'

        Recommend 'Enforce comment resolution'

        # Links 'https://docs.microsoft.com/en-us/azure/devops/repos/git/branch-policies?view=azure-devops#enforce-comment-resolution'

        $Assert.HasFieldValue(($TargetObject.MainBranchPolicy | Where-Object { $_.type.id -eq 'c6a1889d-b943-4856-b76f-9e46bb6b0df2'}), "type.displayName", "Comment requirements")

}

# Synopsis: The branch policy should require a merge strategy

Rule 'Azure.DevOps.Repos.BranchPolicyMergeStrategy' `

    -Ref 'ADO-RP-009' `

    -Type 'Azure.DevOps.Repo' `

    -Tag @{ release = 'GA'} `

    -Level Warning {

        # Description 'The branch policy should require a merge strategy'

        Reason 'The branch policy does not require a merge strategy'

        Recommend 'Consider requiring a merge strategy'

        # Links 'https://docs.microsoft.com/en-us/azure/devops/repos/git/branch-policies?view=azure-devops#require-a-merge-strategy'

        $Assert.HasFieldValue(($TargetObject.MainBranchPolicy | Where-Object { $_.type.id -eq 'fa4e907d-c16b-4a4c-9dfa-4916e5d171ab'}), "type.displayName", "Require a merge strategy")

}

# Synopsis: GitHub Advanced Security should be enabled

Rule 'Azure.DevOps.Repos.GitHubAdvancedSecurityEnabled' `

    -Ref 'ADO-RP-010' `

    -Type 'Azure.DevOps.Repo' `

    -Tag @{ release = 'GA'} `

    -Level Warning {

        # Description 'GitHub Advanced Security should be enabled'

        Reason 'GitHub Advanced Security is not enabled'

        Recommend 'Enable GitHub Advanced Security'

        # Links 'https://learn.microsoft.com/en-us/azure/devops/repos/security/configure-github-advanced-security-features?'

        $Assert.HasField($TargetObject, "Ghas.advSecEnabled", $true)

        $Assert.HasFieldValue($TargetObject, "Ghas.advSecEnabled", $Configuration.GetBoolOrDefault('ghasEnabled', $True))

}

# Synopsis: GitHub Advanced Security should block pushes

Rule 'Azure.DevOps.Repos.GitHubAdvancedSecurityBlockPushes' `

    -Ref 'ADO-RP-011' `

    -Type 'Azure.DevOps.Repo' `

    -Tag @{ release = 'GA'} `

    -Level Warning {

        # Description 'GitHub Advanced Security should block pushes'

        Reason 'GitHub Advanced Security does not block pushes'

        Recommend 'Consider blocking pushes'

        # Links 'https://learn.microsoft.com/en-us/azure/devops/repos/security/configure-github-advanced-security-features?'

        $Assert.HasField($TargetObject, "Ghas.blockPushes", $true)

        $Assert.HasFieldValue($TargetObject, "Ghas.blockPushes", $Configuration.GetBoolOrDefault('ghasBlockPushesEnabled', $True))

}

# Synopsis: Repository should not have inherited permissions

Rule 'Azure.DevOps.Repos.InheritedPermissions' `

    -Ref 'ADO-RP-012' `

    -Type 'Azure.DevOps.Repo' `

    -Tag @{ release = 'GA'} `

    -Level Warning {

        # Description 'Repository should not have inherited permissions'

        Reason 'Repository has inherited permissions'

        Recommend 'Consider removing inherited permissions'

        # Links 'https://docs.microsoft.com/en-us/azure/devops/repos/git/set-git-repository-permissions?view=azure-devops'

        AllOf {

            $Assert.HasField($TargetObject, "Acls.inheritPermissions", $true)

            $Assert.HasFieldValue($TargetObject, "Acls.inheritPermissions", $false)

        }

}

# Synopsis: The branch policy should require a build/pipeline to pass

Rule 'Azure.DevOps.Repos.BranchPolicyRequireBuild' `

    -Ref 'ADO-RP-013' `

    -Type 'Azure.DevOps.Repo' `

    -Tag @{ release = 'GA'} `

    -Level Warning {

        # Description 'The branch policy should require a build/pipeline to pass'

        Reason 'The branch policy does not require a build/pipeline to pass'

        Recommend 'Consider requiring a build/pipeline to pass'

        # Links 'https://docs.microsoft.com/en-us/azure/devops/repos/git/branch-policies?view=azure-devops'

        $Assert.HasFieldValue(($TargetObject.MainBranchPolicy | Where-Object { $_.type.id -eq '0609b952-1397-4640-95ec-e00a01b2c241'}), "type.displayName", "Build")

}